Abstract
The effect of the Embryo lethality mutant (Eml) of rye was studied in crosses between hexaploid wheat and corresponding inbred rye line (L2). Histological analysis of hybrid embryos revealed morphological differences 16 days after pollination. Eml was found to arrest the formation of shoot meristem but had no influence on root meristem formation. The effect of Eml cannot be overcome by in vitro embryo rescue via direct regeneration on Kruse medium. The possibility of complementary interactions between wheat and rye genes and of changes in gene expression through increased variation in dosage-regulated gene expression during hybrid formation is discussed.
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Acknowledgments
We thank Dr F. Matzk for providing the facilities for embryo rescue and tissue culture together with Dr Richard Pickering for critical reading of the manuscript. We are grateful to K. Kumke, M. Hantschmann, M. Pürschel, H. Büchner and H. Block for excellent technical assistance. This work was supported by a grant from the Deutsche Forschungsgemeinschaft and the Russian Foundation for Basic Research: project 06-04-48758a.
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Tikhenko, N., Rutten, T., Voylokov, A. et al. Analysis of hybrid lethality in F1 wheat-rye hybrid embryos. Euphytica 159, 367–375 (2008). https://doi.org/10.1007/s10681-007-9528-x
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DOI: https://doi.org/10.1007/s10681-007-9528-x